Troubleshooting Tables:
List of Board and IC Signals
7-29
NC
NC
R10
I/O
Pul-
lup
Input
Pull-
down
uart1_tx
UART1 Serial Transmit
Data
Y14
Output
None
0
Output
Pull-
down
uart1_rx
UART1 Serial Receive
Data
V14
Input
Pul-
lup
Input
Pull-
down
uart1_rts
UART1 Request To
Send (output)
AA15
Output
None
0
Output
Pull-
down
uart1_cts
UART1 Clear To Send
(input)
R14
Input
Pul-
lup
Input
Pull-
down
uart3_tx
UART3 Serial Transmit
Data
M18
Output
None
0
Output
Pull-
down
uart3_rx
UART3 Serial Receive
Data
L14
Input
Pul-
lup
Input
Pull-
down
usb1_txen
USB1 Transmit Enable
W16
0
Output
None
Input
None
usb1_data
USB1 Bidirectional Data
W14
I/O
None
0
Output
Pull-
down
usb1_se0
USB1 Bidirectional Sin-
gle Ended Zero
R13
I/O
None
U
Output
Pull-
down
usb0_txen
USB0 Transmit Enable
W4
0
Output
None
1
Output
Pull-
down
usb0_data
USB0 Bidirectional Data
P9
I/O
None
Input
None
usb0_se0
USB0 Bidirectional Sin-
gle Ended Zero
R8
I/O
None
Input
None
ssi_omap_clock
SSI Clock into OMAP
G21
Input
None
Input
None
ssi_omap_sync
SSI Sync into OMAP
H15
Input
None
Input
None
ssi_omap_txd
SSI Serial Data from
CODEC
H20
Input
None
Input
Pull-
down
ssi_omap_rxd
SSI Serial Data to
CODEC
H18
Output
None
0
Output
Pull-
down
spi_arm_clk
ARM SPI Clock from
OMAP
U19
I/O
Pull-
down
Input
None
spi_arm_mosi
ARM SPI Data from
OMAP
W21
I/O
Pull-
down
0
Output
Pull-
down
spi_arm_miso
ARM SPI Data into
OMAP
U18
Input
Pull-
down
Input
Pull-
down
Table 7-10. Overall GPIO pin functions (Continued)
Signal Name
Description
Pin
or
Ball #
Active
State
SW Initialized
HW Reset
Direction
*
PU
State Direction
*
PU
or
PD
Summary of Contents for APX 2000
Page 1: ...APXTM TWO WAY RADIOS APX 1000 APX 2000 APX 4000 APX 4000Li DETAILED SERVICE MANUAL ...
Page 4: ......
Page 6: ...iv Document History Notes ...
Page 8: ...Notes vi Commercial Warranty ...
Page 10: ...Notes ...
Page 22: ...xiv List of Figures Notes ...
Page 226: ...6 64 Troubleshooting Waveforms LF CW on Spectrum Analyzer Notes ...
Page 688: ...Index 4 Index Notes ...
Page 690: ...ii Notes ...
Page 700: ...xvi List of Figures Notes ...
Page 806: ...5 50 Troubleshooting Charts PA Failure Notes ...
Page 1008: ...8 178 Schematics Boards Overlays and Parts Lists Transceiver RF Boards UHF2 84012621001 Notes ...
Page 1062: ...8 234 Schematics Boards Overlays and Parts Lists Keypad Board M2 and M3 PC000261A01 Notes ...
Page 1064: ...ii Notes ...
Page 1068: ...Notes A 4 EMEA Warranty Service and Technical Support Further Assistance From Motorola ...
Page 1090: ...Glossary 10 Glossary Notes ...
Page 1094: ...Index 4 Index Notes ...
Page 1095: ......